598 CHRISTIAN CHAMPY AND H. M. CARLETON 
TEXT-Fi4. 5. 
A, Skin of sucker of Lepadogaster guannii-—a ‘suck-fish ’. 
B, Supporting tissue of the same organ with intercellular 
stroma of cartilage. Both a and B show intranuclear canaliculi 
in all the cells. Probably mechanical in origin, e.g. mutual cell- 
pressure. cs, Intercellular cartilaginous stroma; Nr, Nuclear 
incision. 
TEXT-FIG. 6. 
Blastomere from blastula of Triton alpestris. Note deforma- 
tion on one side by volk-discs, yp, and on the other by astral rays. 
c,Centrosome, Technique : Champy’s fluid and iron haematoxylin, 
